EP 0129970 A2 19850102 - Dyed stabilized liquid developer and method for making.
Title (en)
Dyed stabilized liquid developer and method for making.
Title (de)
Stabilisierter Flüssigentwickler der einen Farbstoff enthält und Verfahren zu seiner Herstellung.
Title (fr)
Développateur liquide stabilisé comprenant un colorant et procédé de préparation.
Publication
Application
Priority
US 49905483 A 19830527
Abstract (en)
@ A stable colored liquid developer and method for making such are described wherein an improved optical density resulting from a colored dye being imbibed into a thermoplastic resin core occurs. In particular, the liquid developer comprises a marking particle dispersed in a aliphatic dispersion medium, the marking particle comprises a thermoplastic resin core having an amphipathic block or graft copolymeric steric stabilizer irreversibly chemically or physically anchored to the thermoplastic resin core with the dye being imbibed in the resin core and being soluble therein and insoluble in the dispersion medium. The stable colored liquid developer is preferably made by first preparing a graft or block copolymer amphiphathic steric stabilizer, anchoring said stabilizer to a thermoplastic resin core, and to the aliphatic dispersion of said particle adding a solution of a dye disolved in a polar solvent, preferrably methanol, the dye being soluble in the thermoplastic resin core to enable it to be imbibed therein and substantially insoluble in the dispersion medium.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
G03G 9/122 (2013.01 - EP US); G03G 9/131 (2013.01 - EP US); G03G 9/133 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
US 4476210 A 19841009; DE 3482139 D1 19900607; EP 0129970 A2 19850102; EP 0129970 A3 19850918; EP 0129970 B1 19900502; JP H061393 B2 19940105; JP S59222848 A 19841214
DOCDB simple family (application)
US 49905483 A 19830527; DE 3482139 T 19840511; EP 84303192 A 19840511; JP 9741284 A 19840514